add plugin.compile_commands.autoupdate rule

1 files changed, 66 insertions, 0 deletions

diff --git a/xmake/rules/plugin/compile_commands/xmake.lua b/xmake/rules/plugin/compile_commands/xmake.lua
new file mode 100644
index 000000000..f32468959
--- /dev/null
+++ b/xmake/rules/plugin/compile_commands/xmake.lua
@@ -0,0 +1,66 @@
+--!A cross-platform build utility based on Lua
+--
+-- Licensed under the Apache License, Version 2.0 (the "License");
+-- you may not use this file except in compliance with the License.
+-- You may obtain a copy of the License at
+--
+--     http://www.apache.org/licenses/LICENSE-2.0
+--
+-- Unless required by applicable law or agreed to in writing, software
+-- distributed under the License is distributed on an "AS IS" BASIS,
+-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+-- See the License for the specific language governing permissions and
+-- limitations under the License.
+--
+-- Copyright (C) 2015-present, TBOOX Open Source Group.
+--
+-- @author      ruki
+-- @file        xmake.lua
+--
+
+-- update compile_commandss.json automatically
+--
+-- @code
+-- add_rules("plugin.compile_commands.autoupdate", {outputdir = ".vscode"})
+-- target("test")
+--     set_kind("binary")
+--     add_files("src/*.c")
+-- @endcode
+--
+rule("plugin.compile_commands.autoupdate")
+    set_kind("project")
+    after_build(function (opt)
+
+        -- imports
+        import("core.project.config")
+        import("core.project.depend")
+        import("core.project.project")
+        import("core.base.task")
+
+        -- run only once for all xmake process in vs
+        local tmpfile = path.join(config.buildir(), ".gens", "rules", "plugin.compile_commands.autoupdate")
+        local dependfile = tmpfile .. ".d"
+        local lockfile = io.openlock(tmpfile .. ".lock")
+        if lockfile:trylock() then
+            local outputdir
+            local sourcefiles = {}
+            for _, target in pairs(project.targets()) do
+                table.join2(sourcefiles, target:sourcefiles(), target:headerfiles())
+                local extraconf = target:extraconf("rules", "plugin.compile_commands.autoupdate")
+                if extraconf and extraconf.outputdir then
+                    outputdir = extraconf.outputdir
+                end
+            end
+            table.sort(sourcefiles)
+            depend.on_changed(function ()
+                -- we use task instead of os.exec("xmake") to avoid the project lock
+                local filename = "compile_commands.json"
+                local filepath = outputdir and path.join(outputdir, filename) or filename
+                task.run("project", {kind = "compile_commands", outputdir = outputdir})
+                print("compile_commands.json updated!")
+            end, {dependfile = dependfile,
+                  files = project.allfiles(),
+                  values = sourcefiles})
+            lockfile:close()
+        end
+    end)